Grindstone attachment



( No Model.) '2 Sheets-Sheet 1.

M RAYMOND GRINDSTONE ATTACHMENT.

Patented Apr. 14,1891.-

FIGJ- (No Model.) Q 2 Sheets-Sheet 2. M. RAYMOND. GRINDSTONE ATTACHMENT.

Patented Apr. 14,1891.

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1 V I i NITED STATES PATENT Orrron.

MARK RAYMOND, OF HATFIELD, NElV YORK.

GRINDSTONE ATTACHMENT.

SPECIFICATION forming part of Letters Patent 1\To.450,191, dated April 14,1891.

Application filed June 16, 1890. Serial No. 355,591. (No model.)

To all whom it may concern.-

Be it known that 1, MARK RAYMOND, a cit-izen of the United States, residing at Hatfield, in the county of St. Lawrence and State of New York, have invented a new and useful Grindstone Attachment, of which the following is a specification.

This invention has relation to an attachment for grindstones for the purpose of supporting tools, sickle-bars, scythes, &c., during the operation of grinding.

The objects of the invention are to provide a simple and cheaply-constructed attachment adapted to receive such tools as are to be ground, which device is capable of being manipulated with one hand of the operator for the purpose of presenting the tool at various inclinations and at its different sides to the periphery of the stone for the purpose of grinding the same.

Other objects and advantages of the invention, together with the novel features thereof,

will appear in the following description, and be particularly pointed out in the claims.

Referring to the drawings, Figure 1 is a perspective of a grindstone, the frame-work of which is provided with an attachment constructed in accordance with my invention.

Fig. 2 is a longitudinal vertical section. Fig.

3 is a detail in perspective of the adjustable head. Fig. 4 is a transverse section. Fig. 5 is a perspective in detail of the pivoted sliding frame.

Like numerals of reference indicate like parts in all the figures of the drawings.

1 designates the ordinary frame-work or table of a grindstone, in which, in journals 2, is journaled the transverse shaft 3, provided between the journals with the usual stone 4, one end of said shaft carrying a crank 5, or provided with other mediums for the purpose of imparting motion to the shaft.

6 designates a table provided with a central opening, through which and the framework 1 at the rear side of the same is passed a set screw or bolt 7. Opposite standards 8 rise from the opposite ends of the table, said standards being connected by a transverse bar 9, and provided upon their outer faces with opposite pairs of cleats, forming opposite ways or guides 10. Bars 11 are mounted in each of the ways, said bars being longitudinally slotted, as at 12, and through said slots are passed set or binding screws 13, the inner ends of which pass into the standards,whereby the bars are adjustable vertically within the guides. The upper ends of the bars are bifurcated, and located therein is a transverse bar 14, provided upon its upper side with an elevated track-rod 15, which ext-ends transverse the table 6 and some distance above the same.

16 designates an open oblong frame, the opposite inner edges of the side bars of which are longitudinally grooved, as at 17.

18 designates a sliding head-block or car-' riage provided with opposite ribs 19, which take into the opposite ways or grooves 17, whereby said heads are adapted for longitudinal movement with the frame. A cleat 20 is secured to the head-block by means of the binding screw 21, the opposite ends of said cleat overlapping the side rails of the frame 16, and near said ends said cleat is provided with depending guide-pins 22. By manipulating the binding-screw 21 the opposite ends of the cleat 20 are more or less compressed upon the side bars of the frame, and in this manner the head may be firmly secured in any of the adjusted positions within the frame. At opposite'sides of the cleat are formed openings through which passa pair of opposite'set-screws 23, the lower ends of the screws terminating below the head in T- shaped heads or clamps 24:. At each side of these clamps, which are adapted to receive and hold sickle-bars, scythes, and other long cutting mediums, are located pairs of spacebars 25, which form the upper members of the clamp. The rear bar of the frame is provided upon its under side with a pair of eyes or hooks 26, which are adapted to engage in a removable manner the bar or rod 15, and maybelocked in position thereupon by means of set-screws 27, which pass through said bar and are adapted to close the openings of the hooks.

28 designates a clamping-bar, under which is adapted to be inserted small tools, such as drills, bits, chisels, gouges, &c., and said bar is clamped snugly in position upon the transverse bar of the frame 16 by means of a pair of binding-bolts 29.

3O designates a swiveled hook located at ICC team

the rear edge of the transverse bar of the frame 16, the terminal of the hook being earried by the shank, and diverge to form an opening as shown. By disconnecting the hooks 26 from the rod 15 the hook 30 maybe introduced over said rod and the frame be adapted for universal movement, the hook readily riding back and forth over the rod or swinging in either direction.

By clamping the tool under the clampingbar 28 the stone may be rotated by one hand while the other hand is employed in manipulating the frame, so as to present different sides of the tool to the periphery of the stone, said tool always being maintained at the same relative angle, whereby a uniform bevel is secured.

The same advantages accrue from the employment of the attachment when used for sharpening cutter-bars, scythes, and other cutting mediums of considerable length, in that by sliding the frame back and forth upon the rod 15 the opposite edges of the cutting mediums may be presented to the stone, and by adjusting the cable 6 the angles of presentation may be varied, as when used for the sharpening of cutter-bars or other cutting mediums having a series of teeth.

Having thus described my invention, what I claim is- 1.- The combination, with the frame-work of' a grindstone, of a table mounted thereupon, atransverse guide-rod supported above the table, a frame having one end pivotally connected with and adapted to move upon said rod, a head mounted adjustably in the frame, and means for holdinga tool mounted upon said head, substantially as specified.

2. The combination, with a grindstone frame-work, of a table pivotally and adjustably mounted thereon, a transverse guide-rod adj ustably supported upon and above the table, an oblong frame provided with a hook at its rear end and removably connected to the rod and adapted to ride thereupon, means for clamping a tool upon the frame, and a head adapted for sliding and adjustably mounted upon the frame and provided with means for clamping a scythe or other similar cutting medium, substantially as specified.

The combination, with the frame-work, the table, the set-screw pivotally and adjustably connecting the table with the f rame-work, said f rame-work being provided with opposite standards provided with Ways, longitudinallyslotted bars mounted in the Ways, set-screws for adjusting the bars, a transverse bar connecting said adjustable bars, and a track or guide-rod mounted upon said transverse bars and binding-screws mounted in the slots of the adjustable bar and taking into the standards, of the oblong frame, the opposite inner edges of which are provided with grooves, the opposite ribbed head mounted for sliding in the grooves, the transverse clamping-baroverlapping the sides of the frame, the bindingscrew passing therethrough, the opposite pair of binding-screws terminating below the head in transverse heads, a pair of cleats arranged at each side of the transverse heads, the clamping bar, the adjusting-bolts passing therethrough and through the rear ends of the side bars of the frame, the swiveled bent hook projecting from the rear edge of the rear transverse bar and adapted to engage the aforesaid guide-rod and the opposite pair of depending hooks engaging said rod, and the set-bolts for locking said hooks, substantially as specified.

4. In a. tool-holder of the class described, the combination, with a pivoted sliding frame, the opposite longitudinal bars of which are provided at their inner edges with grooves, of ablock or head having opposite ribs for entering the grooves, a clamping-bar overlapping the grooved rails or bars, a binding-screw connecting the same with the head, and a pair of binding-screws passing through the head on each side of the bar and terminating at theirlower ends in transverse clamping-heads, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

MARK RAYMOND.

\Vitnesses: ALLEN CORY,

B. O. DUTToN. 

